Molding-machine for cylindrical phonograms.



B. Fi .PHILPOT. MOLDING MACHINE FOR OYLINDRIGAL PHONOGRAMS.

APPLIGATION FILMS H1342, 1910.

999,183.` Patented .lilly .25,` 1911.

l l l l I l A l l by 7m Atty BRIAN F. lPlC-IIZLEOJ, OF BRGOKLYN,4 NEW' YORK. A

MOLDING-MACHINE FOR CYLINDRICAL PHGNGRAMS.

Specification of Letters Patent.

Patented July 25, 1911..

Application filed February 12, 1910. Serial No. 543,530.

To all whom it may concern.'

Be it known that I, BRIAN F. PHILror, av citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Molding-Machines for Cylindrical Phonograms, of which the following is a specification.

My invention relates to improvements in machines or molding presses for turning in lthe ends of tubes or cylinders used in making phonograms in accordance with the process disclosed in my application Ser. 'No 543,529 filed February 12th, 1910.

' My object is the production of a press vwhich will support the extremely thin walls of the tube, and smoothly turn the ends in between the dies which are maintained at a pre-determined distance vapart while the moldingl operation is being carried on.

In the drawing Figure 1 is a view of the complete machine, Fig. 2 is a sectional view of the tube holder and molding cap or die,

and Fig. 3 shows the end o'f the tube after\ it has been turned in.

The machine comprises a base 1 provided with a bearing standard 2 having a bearing box 3 at the upper part. A plunger 4 is actuated by a gear 5 working in a rack on the plunger and reciprocates in the bearingv 3,A a handle 6 connected with the gear at,

fording means for reciprocating the plunger. A shelf 7 carries the work holding cylinder S which is provided with a base 9. The shelf is far enough below the head ot' the machine to enable the tubes to be slipped in and out of the cylinder. The inside diameter of this cylinder is slightly larger than the outside of the tube to be molded. A mandrel rests inside this cylinder and its outside dia-meter is slightly less than the inside diameter of the tube being molded. This mandrel consists of a differential plug 10 resting on the base 9 and has a spring 9 wound around its small diameter. A second plug member 11 rests on the spring and newals. The heating head 14 is attached A to the plunger 4 and flexible piping 16 affords means for conveying steam for keeping they head hot. A female die 15 is secured to/the head 14 and coperates with the male die 12.

A tube of the material to be molded is slippedv into the cylinder with its upper edge slightly showing ahove the top as shown in' Fig. 2. On lowering the heated head and die the central part 15 of the-female die strikes the spring supported part 11 of the A' compound mandrel and causes it to telescope against the pressure of the spring.

The thickness of the 4central boss 15 determines the space between the operative faces of the dies which should be a few thousandths of an inch more than the thickness of the material being operated upon to enable it to' slip freely between the dies and be rolled in and yet prevent wrinkling. The exposed edge of the tube strikes against the. flare on the outside of the female die 15 and begins to curl inward over the edge of the male die. On further downward mot-ion ofthe head the upper part of the mandrel continues to sink and the upper edge 'of the tube 13 is rolled smoothly'between Ythe dies. As the sides of the tube are at all times fully supported between the mandrel and cylinder they have no chance to warp, twist or wrinkle. After the limit of travel is reached the head is raised, the spring lifting the upper member of themandrel and the tube with its rolled over edge can be removed from themachine.

l claim 1 1. A molding machine for making cylindrical phonogram blanks of Celluloid or the like material comprising a frame, tube holding mechanism a die secured to the tube holding mechanism, a heated head movably se.- cured to the frame, a counter die on the head and means for maintaining a predetermined separation between the operative faces of the dies while they are in molding position.

2. A molding machine vfor making cylindrical phonogram blanks 0f Celluloid or the like material comprising a frame, a cylinder secured thereto, a compound mandrel within the cylinder, .the upper member of which is yieldingly supported` a dieon the upper member, a heated head, av counter die carried thereon, means for reciprocating said head with respect tothe cylinder whereby the material to be'molded will be for`ced between the dies upon the reciprocation of the es y head. and means for maintaining a pre-de' termined separation between the operative -lld lliriial phonogram blanke of Celluloid or the like material comprising a heated head, a die on said head, menne for reciprocating Said head, a work holding member alined with said head consisting of a cylinder, a compound mandrel within said cylinder composed oi an upper part which telescopes with respect to the cylinder, and a lower supporting part, the cylinder and mandrel being adapted to hold the tube to be operated npon between them, a counter die on the upper member of the mandrel and means for maintaining a pre-determined separation between the operative faces of the dies while they are in molding position.

4. A molding machine for making' cylindrical phonogram vblanke of Celluloid or the like material comprising a heated head, a die on said head, means for reciprocating said head, a worl; holding member alining with Said head consistingl or' a cylinder, a

Compound mandrel within said cylinder composed of a lower part of different diameters, a Spring on the Smell diameter, an upper part guided by the small diameter and resting on the springj and a counter die on the spring supported member, the cylinder and mandrel being adapted to hold the tube to be operated upon between them; and

means for maintaining e predetermined separation between the operative faces of the dies when the)7 are in molding position.

5. A molding machine for making cylindrical phonogram blanks of Celluloid or the like material comprising a heated head., a dieon 'said heath menne ttor eeiproeating said head, a work holdingjv cylinder rigid@7 supported in alinement with said head, a com pound mandrel, in seid cylinder consistn ing of annpper and e lower memben the upper member of which teleeeopes with respeet to the cylinder mean.c supporting the upper meniber, a eonnter die on the upper member, the eylinfler and mandrel being so proportioned that the tube to be operated upon will it Snngly between the'eylinder and mandrel and project above the top of the Cylinder and Slightly above the face of the die, end means for maintaining a 'pre-detern'iined ration between the operative faces of the dies when they are in molding position In'testimony whereof i have ail te' signature in presence of two witr BRAN lll:

Hifi? Witnesses:

Roer. B. lliiLLGone, A. J. MANFRED.

or yield inglyti (l 

